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Sample Output
36
#include<iostream> |
#include<algorithm> |
#include<cmath> |
using namespace std; |
char res[10001]; |
int i, carry, len = 1; |
void mutiply ( int n ) |
{ |
carry = 0; |
char *h = res; |
for ( i = 0; i < len; i++ ) |
{ |
*h = *h * n + carry; |
carry = *h / 10; |
*h %= 10; |
h++; |
} |
if ( carry != 0 ) |
{ |
*h = carry; |
len++; |
} |
} |
void f ( int n ) |
{ |
int n3, n2, i; |
if ( n %2 == 0 ) |
{ |
n3 = n / 6 * 2; |
n2 = n % 6 / 2; |
} |
else |
{ |
n3 = ( n - 3 ) / 6 * 2 + 1; |
n2 = ( n - 3 ) % 6 / 2; |
} |
for ( i = 1; i <= n3 / 2; i++ ) |
{ |
mutiply ( 9 ); |
} |
if ( n3 % 2 != 0 ) |
{ |
if ( n2 > 0 ) |
{ |
mutiply ( 6 ); |
n2--; |
} |
else |
{ |
mutiply ( 3 ); |
} |
} |
if ( n2 > 0 ) |
{ |
mutiply ( ( int ) pow ( 2.0,n2 ) ); |
} |
} |
int main() |
{ |
int n; |
res[0] = 1; |
while ( scanf ( "%d",&n ) !=EOF ) |
{ |
if ( n <= 3 ) |
{ |
printf ( "%d\n", n ); |
continue; |
} |
res[0] = 1; |
len = 1; |
f ( n ); |
for ( i = len - 1; i >= 0; i-- ) |
{ |
printf ( "%d", res[i] ); |
} |
printf ( "\n" ); |
} |
return 0; |
} |
